积分判别法(integral test)以广义积分为工具，判别各项递减的正项级数收敛性的一种判别法。
本文所考虑的是二阶非定常系统稳定性的积分不等式判别法。
In this paper we shall discuss the criteria of stability for second-order linear nonautonomous, systems using the integral inequality.
利用无穷积分的敛散性给出了无穷级数敛散性的一个新的判别法。
In this paper, new criterion of convergence and divergence for infinite series is given by means of the convergence and divergence of infinite integral.
本文建立了非负函数无穷积分敛散性的几个新判别法，讨论了这些判别法所对应的比较对象，说明了它们的精细程度。
As well, the decision method of nonnegativity of function are given, and be used in the proof of function inequality in this paper.
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